423023320 has 64 divisors (see below), whose sum is σ = 970175520. Its totient is φ = 165970944.

The previous prime is 423023273. The next prime is 423023351. The reversal of 423023320 is 23320324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808579 + ... + 809101.

Almost surely, 2^423023320 is an apocalyptic number.

423023320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423023320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485087760).

423023320 is an abundant number, since it is smaller than the sum of its proper divisors (547152200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423023320 is a wasteful number, since it uses less digits than its factorization.

423023320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 423023320 is about 20567.5307219899. The cubic root of 423023320 is about 750.6798694431.

Adding to 423023320 its reverse (23320324), we get a palindrome (446343644).

The spelling of 423023320 in words is "four hundred twenty-three million, twenty-three thousand, three hundred twenty".